Sewage treatment method

Abstract

The invention discloses a sewage treatment method, comprising the steps of 1, the sewage, catalyst, and a first oxidizing agent being mixed and treated, the treating temperature being 50-80 DEG C, the treating time being 1-3 hours; 2, the first round treated sewage being solid-liquid separated, and the PH value being adjusted to 8-10; 3, the separated liquid under a pressure of 0.2-1.6 MPa, being heated to 110-150 DEG C, adding a second oxidizing agent, the reacting time being 1-5 hours: 4, the second round treated sewage being solid-liquid separated; the catalyst has excellent water hydrophilicity and dispersion ratio, increases catalyst effect, the treated sewage achieves industrial discharge standard, the sewage treatment result is good.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a sewage treatment method. Background technique [0002] my country is one of the countries rich in water resources, with a total water resource of 2,812.4 billion cubic meters, ranking sixth in the world. However, due to the large population of 1.3 billion, my country's per capita water resources are only 2163, which is about 1 / 4 of the world's per capita water resources; [0003] With the rapid development of my country's industry, water consumption is increasing year by year, and the management of water resources is becoming increasingly important. Molecular sieve is an important chemical catalyst active component. With the development of chemical industry, its demand is increasing day by day. However, the production process of molecular sieve needs to consume a lot of water. The water consumption per ton of molecular sieve is about 100 tons of water, of which about 28-30 % of se...

AI Technical Summary

Problems solved by technology

Molecular sieve is an important chemical catalyst active component. With the development of chemical industry, its demand is increasing day by day. However, the production process of molecular sieve needs to consume a lot of water. The water consumption per ton of molecular sieve is about 100 tons of water, of which about 28-30 % of sewage belongs to high COD sewage (it is generally believed that reaching more than 1000mg / L is high COD sewage), thus limiting the development of molecular sieve industry